Syracuse, N.Y. -- Motorists heading out onto the roads in Onondaga County be warned. Conditions are hazardous.

Onondaga County 911 said it had taken almost 450 calls in total since 3 p.m. Saturday, which is higher than normal.

Traffic in parts of the city of Syracuse came to a standstill after 7 p.m. as emergency responders struggled to reach vehicles that had skidded into accidents. On the city's North Side, Grant Boulevard between Wolf Street and LeMoyne Avenue was impassible as crews responded to a crash.

Ice-covered streets with inclines became difficult to traverse as cars and trucks spun their wheels. The Syracuse Department of Public Works said trucks were salting roads in the city Saturday night.

Many secondary roads, however, were iced over and appeared to be waiting for salt.

Though many accidents were reported, Onondaga County 911 said it had no reports of significant injuries.

The state Department of Transportation reported snow and ice conditions on both directions of U.S. Route 11 from Tully north to Jefferson County. The DOT also said several lanes were closed on Interstate 81 south past Exit 26 in Mattydale and on Interstate 690 at Teall Avenue.

A few dozen car accidents were also reported in Madison and Oswego counties, but none were serious.

Manlius Pebble Hill said its open house set for Sunday afternoon would go forward despite the inclement weather.